$(document).ready(function(){
    var submit = false;
    $('#registerForm').submit(function() {
        if(!submit) { 
	        $.post(Chiptop.URL_CHECK_CAPCHA, { capcha: $('#capcha').val() }, function(code){
	            $('#code').val(code);
	            submit = true;           
	            $('#registerForm').submit();
	        });     
        }
        return submit; 
    });  
});